The new Nikon AF-S Nikkor 16-35mm f/4G ED VR Wide Angle Zoom Lens delivers crisp, clear and non-distorted image captures that photographers have come to expect from Nikon. This Nikkor is built with 17 lens elements in 12 groups and include 2 Extra-low Dispersion (ED) and 3 Aspherical lenses that help create images that are sharp and dynamic without chromatic or other aberrations even at f/4. Nano Crystal Coating virtually eliminates internal lens element reflections across a wide range of wavelengths and reduces flare and ghosting. It also features a rounded 9-blade diaphragm which creates a natural appearance in out-of-focus areas of your images. Fast, accurate and quiet autofocus is accomplished via Nikon's exclusive Silent Wave Motor (SWM) and Internal Focus (IF) enables fast and quiet autofocus without changing the length of the lens, retaining working distance throughout the focus